Thread: Machining intake off head on a Cummins
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Old 03-16-2012, 03:15 PM   #8
zstroken
 
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Name: zstroken
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Location: Western Michigan(by the lake)
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Quote:
Originally Posted by White Duramax View Post
Modifying the y bridge on a duramax to me is the same as changing the intake horn on a Cummins, not like cutting off the side of the head. You will have to let Duramax's run sheet metal intakes also then. I would allow y-bridge or air horn mods but nothing further in the 2.5 class.

I would say they could run sheet metal intakes if they are the same shape/size as the OEM one. The cummins folks have to cut off the intake to get at the intake valves for porting.

I don't think a runner manifold should be allowed. It really shouldn't be allowed in the 2.6 though either lol.
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